Have for sale my DIYPNP that I built for my 95 Miata. I built it with the sequential injection. It is built and should be ready to plug in and play in your Miata. I did power it up out of the car, flashed new firmware onto it and flashed a base map onto it but I DID NOT TRY IT IN MY CAR. Included with the unit is the DB9 serial cable, USB/serial adapter (the one diyautotune sells) and IAT sensor with aluminum bung that I have not opened yet.